package com.jingdianjichi.subject.infra.basic.utils;

import com.alibaba.druid.filter.config.ConfigTools;

import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;

/**
 * 对druid 数据池敏感信息进行加密
 */
public class DruidEncryptUtil {
    private  static String publicKey;

    private  static String privateKey;

    static {
        try {
            String[] keyPair = ConfigTools.genKeyPair(512);//密钥对
            privateKey = keyPair[0];
            System.out.println("privateKey:" + privateKey);
            publicKey = keyPair[1];
            System.out.println("publicKey:" + publicKey);
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        } catch (NoSuchProviderException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 加密方法
     * @param plainText
     * @return
     */
    public static String encrypt(String plainText) throws Exception {
        String encrypt = ConfigTools.encrypt(privateKey, plainText);
        System.out.println("encrypt:" + encrypt);
        return encrypt;
    }

    /**
     * 解密方法
     * @param encryptedText
     * @return
     */
    public static String decrypt(String encryptedText) throws Exception {
        String decrypt=ConfigTools.decrypt(publicKey,encryptedText);
        System.out.println("decrypt:" + decrypt);
        return decrypt;
    }

    public static void main(String[] args) throws Exception {
        String encrypt = encrypt("Wing1Q2W#E");
        System.out.println("encrypt:" + encrypt);
        String decrypt = decrypt(encrypt);
        System.out.println("decrypt:" + decrypt);
    }
}
